QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem886606
USGS iscgem886606
26 May 1957, 10:36
21 km ESE of Akyaz?, Turkey
A magnitude 6 mw earthquake at 15 km depth.
Published location
Where is 21 km ESE of Akyaz?, Turkey?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
40.620000, 30.860000
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What the numbers mean
Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.
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Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
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Catalog fields and provenance
Event ID
iscgem886606
Coordinates
40.62, 30.86
Network
iscgem
Significance
558